To wash barn wood, spray it down with a mild bleach solution to discourage mold, then scrub the surface of the wood with a stiff brush and a solution of detergent and warm water. Power washing and sandblasting can also provide an effective method, but it might also damage the wood.Continue Reading
Wear rubber gloves and use a face mask when cleaning barn wood.
Mix a mild bleach solution in a spray canister, then wash the wood to kill mold and mildew.
Create a soapy solution with detergent and warm water, then scrub with a wire brush or stiff bristled brush. This removes heavy soiling and surface stains.